Factions in Oblivion

Factions in Oblivion
There are four major factions in Oblivion.

The Dark Brotherhood, assassins.

The Fighters Guild, mercenaries.

The Mages Guild, magicians.

The Thieves Guild, organized crime.

Each has a series of quests with the player being able to become the head of the guild.

It is possible to be the head of all four guilds at the same time.